Hose clamp



HEY l, 1,939 M. c. BERSTED 1,769,895

HOSE CLAMP Filed Feb. 14, 1929 INVENTOR. MWI/Y Y 5.59522?.

BY www A TTORNEY Patented duly i, 193i@ iLiteras MARTIN C. BERSTED, OF SAN DIEGO, CALIFORNIA nosa CLAMP' Application led February 14, 1929. Serial No; l339,897.

My invention relates to hose clamps and the objects of my invention are: iirst, to provide a hose clamp in which the` one end of said clamp extends over the other end thereof forming a housing therefor and also forming an integral working partthereof; second,.to provide a hose clamp which is especially adapted for gardenr hose or the like, there being no sharp projecting edges which might injure a person or tear his clothing; third, to provide a hose clamp which is easily fastened around a hose or removed therefrom but whichk cannot be accidentally dislodged; fourth, to lprovide a hose clamp which is desirable for clamping the hose connections of a vehicle, thereby eliminating the unsightliness of the conventional hose clamp used for'su'ch purposes; fifth, to provide a hose clamp which may be adjusted to fit va- ?0 rious sizes of hose and in which the adjustable clamp portion has a double bearing surface so as to increase the strength of said catch; sixth, to provide a hose clamp which does not tend to dig into or cut into the hose but merely compresses it; seventh, to provide a hose clamp which presents a substantially continuous surfaceto thehose even between the clamping portions thereof, thus the hose cannot become pinched or ruptured .-50 as the clamp is contracted, due to the hose being forced into portions of the clamp not normally in contact with the hose; eighth, to provide a hose clamp in which the constricting ,tendency is distributed evenly .'35 around the hose, thereby enabling said hose to readilyform a fluid sealed joint with the member to which it is attached; ninth, to provide a hose clamp in which the overlapping portions are reduced to a minimum, 40 thereby reducing the amount of material needed, and tenth, to provide a hose clamp which is extremely simple and rugged of construction proportional to its functions, easily manufactured, readily installed, durable, ef-

y icient in its action and which will not readily deteriorate or get out of order. With these and other objects in view as will appear hereinafter, my invention consists of certain novel features of construction, com- .50 bination and arrangement of parts and portions as will be hereinafter described indetail and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of tary sectional View through 5--5 of Fig. 3

showing the details of the clamp structure, with parts and portions shown in elevation to facilitate the illustration; Fig. 6 is a transverse sectional View through 6 6 of Fig. 5; Fig. 7 is a fragmentary developed view from the line 7-7 ofFig. 5 with the screw member removed, and Fig. 8 is a perspective view of my clamp in another form thereof.

' vSimilar characters of reference refer to similar parts and portions throughout the several views of the drawings. i

rllwo arcuate band members l and 2. are provided. j kThe one end of the band member l is provided with a plurality of spaced apart, transversely extending slots la. This band member is adapted to extend along the inner side of the band member 2, as shown in Figs. l, 3 and 4. of the drawings. The extended end lb of the band member l is beveled so that the end of the inner band will not forma projection which might rupture the hose.

The end portion of the band member 2 is i provided with an inwardly offset shoulder 2a,

as shown best in Fig. 4, the one side of which is adapted to bear against one of the transverse webs lC which j separate the slots la. After forming the shoulder 2 the band member 2 extends arcuately along the inner side of the band member` l for a short dist-ance and then forms an outwardly extending hook portion 2b which is adapted to engage an adjacent web member 1. Thus the catch members formed by the respective end portions of the bands l and 2 engage each other at two places. That is, the shoulder 2a engages one i web, while the hook portion 2b engages an adfecent web. mit 'ese two members are )oined together by first inserting the end of the hook into one of thefslots 1,, as shown by the first set of dotted l* lines in Fig. 4, labeled A. The band member 2 `is thenrotated, as indicated by the arrow i Vund d set of dotted lines in Fig. 4, lebe] l 1. The other extremity of the band member 1 also extends inside of the band member 2 and l is provided with a beveled end 1d similar to @furthe beveled end 1". i Near this other extended end hevln the beveled rtion 1", the inner band mem er 1 lis provigdwith an outwardly pressed porul `,time*.fm'tnin e hollow boss portion le, as shown 1n Figs. 5, 6 and Notches 1t u preferabl formed in opposite sides of r 1 before the metal 1s pressed out so as" to enable the pressed out or hollow j` `boel porti n ,1? to be formed without stretcht reducing the-thickness of the metal ,-mecm boss portion 1 thus formed is ered with an openingextending substanta tial with the band member f t in Fig. 5. This opening is l ,'jur'ef'stbl .Y punched lnwardly from the op- POSHSi o 0f the boss portion 1e forming `outlet!mtaily` annular lip portions 1g.. The i thus formed in the bOSgs portion 1e l is, internally threaded to recelve a 'screw .member mThe position of the opening 1s `buch that when it is threaded the inner surtime `of the upper extremity of the boss porI 1 is serrated with the grooved porllsbfjbethreads, as shown in Figs. 5, 6. and 7J. "By forming the lips 1s and by Ipiaci the opening adjacent to the upper extremity ofthe boss portion le so that the flillreads Emirate the inner, upper surface Lthorofo maximum lthreaded area is provided for receiving the screw so that considambie force may be placed on the screw 3 stripping the threads of the boss One: end of the screw 3 facing towards @transversely slotted end of the bund 1 ,y dune a cnmrlike surface 3. The other end ""3 gf Said Screw is Slotted or otherwise S0 as to receive a. tool for turning mid screw.

` The extended end of the outer band 2 op- ,.r. `'positie fnom the catch portion thereof is fi yrdssed outwardly forming a housing por- 1- tion 2 which encloses the screw and boss `itung The transverse diameter of said y oqsipg is.` just suiiicient to receive the boss es shown best in Fig. 6.

longitudinal length of the housing .Qmis substantially equal to the length of the `3. e forward end, that is the end theihtmsing 2? adjacent to the extended of band 2, curves rather abruptly outwardly from the normal surface of the band and continues this curvature until said end doubles slightly back towards the extended end of the band 2, as shown best in Fig. 5. By doing s0, a cani bearing surface 2d is 'formed which is engageable by the cam end 3a of the screw 3. The slope of this cam surface 2d is such that pressure of the screw 3 against it tends to force this extended end of the housing towards the bund 1, as indicated by the arrow in Fig. 5.

The upper portion of the cam bearing surface 2d forms a forwardly extending semispherical portion 2e which receives the cam end of the screw when the clamp is in its contracted position, as shown by dotted lines in Fig. 5. The housing 2c extends backwardly from the forward end thereof. The height of the housing gradually diminishes so that its upper surface extends substantially parallel with a line tangent to the bund 3 near the rear end of said housing, so that when the clamp is in its contracted p0- sition, as shown by dotted lines in Fig. 5. the screw 3 will be substantially parallel with the uppersurfuce of the housing and the cam end 3a will be opposite the forwardly pressed portion or semi-spherical portion 2 ofi the housing 2 so that said housing cannot he removed without first contracting the bands l and 2.

lVhen the hose clamp is positioned around the hose und drawn t0 this position, it is clamping the hose tightly so that further constriction of the clamp is impossible, thus smid clamp cannot be removed unless it is broken or the screw moved back to the position shown by the solid lines in F ig. 5.

The rear end of the housing 9. slopes more gradually than does the forward end thereof. This rear surface of the housing is provided with a longitudinally extending slot 2f. The tool receivingr end 3b of the screw extends slightly beyond this slot 2f so as to be readily engaged by u screw driver or other suitable tool.

y It will be noted that this end of the screw is rounded so that no projecting' edges are formed. Y i

In order to increase the pressure of the clump upon the hose so that the clump may be interlocked to u certain extent with the hose, longitudinally extending slots lh and 2g are provided. as shown best in F igs. 2 and 3 of the drawings.

The extended end of the band 2 having;r thc housing 2 formed therein is rounded, as shown best in Figs. 2 and 3, so as to remove all sharp edges.

If it is not desired to make the size of theY clump adjustable, the bands 1 and 2 may be integral with euch other, as indicated in Fig. 8. In this structure the clamp is even more free from projecting sharp edges.

My clamp is installed on a hose as follows:

The screw 3 is turned until its cam end 3a is flush or slightlywithin the corresponding surface or" the boss portion l. The catch portion of the clamp-is then adjusted to the approximate size of the hose. The housing 20 is then slipped over the boss portieri le, the slot 2f thereorn fitting over the end 3b ot the screw. When the housing is inposition the screw is turned until it has reached the dott-ed position shown in Fig. 5, inV which' position the housing cannot be slipped off without further constricting the clamp as before mentioned. Also, due to the forwardly sloping surface of the semi-spherical portion at the point of contact between the camfportion 3a and the forward end of the housing, said forward end of the housing is forced against the inner band 1.

It will be noted that the leverage obtained by the screw is directed in such a manner as to bemost en'icient.

It is obvious from the construction as illustrated in the drawings and described in the foregoing specification that there is provided a hose clamp as set forth in the objects of the invention and though I have shown and describedfa particular construction, combination and arrangement of parts andvportions, I do not wish to be limited to this particular construction, combination and ar-` rangement but desire to include in the scope ot my invention the construction, combination and arrangement substantially as set fort-h in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a hose clamp, a boss, a screw means extending therethrough, and a housing extending over said boss and said screw means, said housing engageable by said screw means. 2. In a hose clamp, a boss, a screw means extending therethrough, a housing extending over said .boss and said screw means,V said housing engageable by said screw means, and la constrictable band means connecting said boss and said housing.

3. In a hose clamp, a boss, a screw means extending therethrough, a housing extending over said boss and said screw means, said housing engageable by said screw means, a band connected to said boss, and a second band connected to said housing.

4. In a hose clamp, a boss, a screw extending therethrough, a housing extending over said boss and said screw, said housing engageable by said screw, a band connected to said boss, a second band connected to said housing, and catch means joining said bands ing engageable by ysaid screw, a band connected to lsaid boss, and a second band connected to said housing, one of'said bands provided with web portions separated by slots, the other of said bands provided with a catch shoulder and a catch hook, said shoulder engageable with' one of 'said web portions and said hook engageable with an adjacent web portion. y

6. In a hose clamp, a band means having overlapping end portions, a boss pressed outwardly therefrom near the one end thereof, a screw means screwably mounted in said boss and extending approximately parallel with a tangent line of said band means, and a housing pressed outwardly from the other end portion of said band means, said housing adapted to enclose said screw means and boss and be engaged by said screw means for constricting said band means.

7; In a hose clamp, a band means'having overlapping end portions, a boss formed near the one end thereof, a screw means screwably mounted in said boss and extendingV approximately parallel with a tangent line ofsaid band means, and a housing formed near the other end of said'band means, said housing 'adapted to completely enclose said screw and boss means except for an opening therein adapted to permit access to said screw means,

said housing adapted to be engaged by said screw means for constricting said band means.

8. In a hose clamp, aband means, comprising two arcuate band members, and catch means` adjoining the one end of said band members for regulating the size of said band means, a boss formed near the other end of one of said hand members, a screw means screwably mounted in said boss and extending approximately parallel with a tangent line of said band means, and ka housing formed near the other end or" the other one of said band members, said housing adapted to completely enclose said screw and boss means except for an opening therein adapted to permit access to said screw means, said housing adapted to be engaged by said screw meansfor constricting said band means.

9. In a hose clamp, a band means, comprising two arcuate band members, and catch means adjoining the one ends of 'said band members for regulating the size of said baud means, a boss pressed outwardly from the other end of one of said band members, a screw means screwably mounted in said boss and extending approximately parallel with a tangent line ofsaid band means, and a housing pressed outwardly from the other end portion of the other band member, said housing adapted to enclose said screw means and boss and be engaged by said screw.

10. In a hose clamp, a band means, comprising two arcuate band members, a plurality ofweb portions formed in one of said inll'brwaoatchahoulder and a catch "hnukimdiat the one end portion on the n mgfrudrbmdlmembers, said shoulder rholmglgeable with adjacent web porbnnd members overlapping each y y "tlhmltithet other ends, a boss formed near 1 ofone of said band members, a f mwlaaeiaeserewably mounted in said boss MV `and extending gpproximately parallel with a' vsaidlklaandhmembr, gud al Hg near t o ot er en o sai `tlm'ulilldi'lrmmber, said housin adapted to if" Mllheim tmloaaaaid screw an boss means Opening therein adapted to per i Initiateur tosaidecrew means, said housing multim be enga d by said screw means t.; sai band means.

L., t1-Lila mhoae clamp, a band means, coinplagtwomreuate band members, a plur f `of web portions formed in one of said 1b allnbt, acatch shoulder and a cat-ch on the other of said. band mem- Wdcgulder and hlpok engagelable witl `whim t! rtions,a oss pressec outwar tyfthmtmmliioearthe one end of said band im@ www means scrowably mounted in tifholfindextending approximately parlllll'litha tangent line of said band means, :l .homing pressed outwardly from the 'emi portion Of'said band means, said y 'adapted to enclose said screw means r lndlle engaged `by said screw means for constricting said band means.

'r 7:19. Inl hose clampdi band means, a boss Iimdoutwlrdly therefrom near the one end lsorewfmeans serewably mounted in extending approximately par- "llidlwilh d tangent line of said band means, .will helping pressed outwardly from the l t Mhtf'mltportion of said band means, said ada,` ed to enclose said screw means pnfbul's an be engaged by said screw, said 'ocmw means adapted to engage an end wall of lid` housing and cause contraction of said blndmselns: as said screw means is extended. i, 11th` In l hose clamp, a band means, com- 'hw'nrcuate band members, and catch V adjoining the ends of said band memfberslforvregulating the size of said band it: mlm, abss formed near the one end of iblmdmeans, a screw means screwably mounted in` said boss und extending approxihiltljwparalicl with a tangent line of said i blndnmns, and n. housing formed near the `other amd-"of said band means, said housing ndl'ptadto completely enclose said screw and bona 'means except for an opening therein i adapted "to permit access to said screw means, H Suidhmming adapted to be engaged by said mennsfor constricting said band means,

said www means adapted to engage an end wall of said housing and cause contraction ofsaid 1hund means as said screw means is 14. Inn hose clamp, a band means, comprsing two arcuate band members, and catch means adjoining the ends of said band members for regulating the size of said band means, a boss pressed outwardly from the one end of said band means near the one end thereof, a screw means screwably mounted in said boss and extending approximately parallel with a tangent line of said band means, and a housing pressed outwardly from the other end portion of said band means, said housing adapted to enclose said screw means and boss and be engaged by said screw, said screw means adapted to engage an end wall of said housing and cause contraction of said band means as said screw means is extended.

15. In a hose clamp, a band means comprising two arcuate band members, a plurality of web portions formed at one of said band members, a catch shoulder and a'catch hook formed on the other of said band members, said shoulder and hook engageable with adjacent web portions, a boss formed near the one end of said band means, a screw means screwablymounted in said boss and extending approximately parallel with a tangent line of said band means, and a housing formed near the other end of said band means, said .housingfadapted to completely enclose said screw and boss means except for an opening therein adapted to permit access to said screw means, said housing adapted to be engaged by said screw means for constricting said band means, said screw means adapted to engage anl end wall of said housing and cause ycontraction of said band means as said screw `means is extended.

16. In a hose clamp, a contractible band means having overlapping end portions, a boss extending outwardly from the inner one of said end portions and an elongated housing extendin outwardly from the other of said end portions and adapted to tit over said boss portion, and means for causing said housing to slide longitudinally relative to said boss portion for contracting or expanding said band mea-ns.

17. In a hose clamp, a band member, a pressed out portion at each end thereof, the one of said pressed out portions adapted to tit over the other, and means enclosed by one of said pressed out portions for shifting said pressed out portions relative to each other so as to vary the size of said band member.

In testimony whereof, I have hereunto set my hand at San Diego, California, this 29th day of January, 1929.

MARTIN C. BERSTED. 

